<li class="{% if active %}active{% endif %}">
  <a tabindex="0" role="button" data-container="body" data-toggle="popover" data-trigger="hover" data-placement="top" data-html="true" title="{{'提问必答'|trans}} {% if not active %}<small class='text-muted'>({{'暂未提供'|trans}})</span>{% endif %}" data-content="{{'对于提问做到有问必答，帮您扫清学习过程中的种种障碍'|trans}}">{{'问'|trans}}</a>
</li>